adolf01
New Member
I have a w211 e280 with an audio 20 which doesn’t even turn on. It used to turn on then switch off but now it longer turns on no matter what I do. I have checked all fuses even the one at the back of the head unit and all are good. I have tried the trick of removing fuses for radio overnight and fit them back next morning but still it doesn’t turn on. I plugged the icarsoft and error 9028 comes up. Could it be headunit failure or something
